Predicting the effect of hull roughness on ship resistance using a fully turbulent flow channel

Roberto Ravenna, Ryan Ingham, Soonseok Song, Clifton Johnston, Tahsin Tezdogan, Mehmet Atlar, Yigit Kemal Demirel

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Abstract

The consequences of poor hull surface conditions on fuel consumption and emissions are well-known. However, their rationales are yet to be thoroughly understood. The present study investigates the hydrodynamics of fouling control coatings and mimicked biofouling. Novel experimental roughness function data were developed from the “young” fully turbulent flow channel facility of the University of Strathclyde. Different surfaces, including a novel hard foul-release coating, were tested. Finally, the performance of a benchmark full-scale containership was predicted using Granville’s similarity law scaling calculations. Interestingly, the numerical predictions showed that the novel hard foul-release coating tested had better hydrodynamic performance than the smooth case. A maximum 3.79% decrease in the effective power requirements was observed. Eventually, the results confirmed the practicality of flow channel experiments in combination with numerical-based methods to investigate hull roughness effects on ship resistance and powering. The present study can also serve as a valuable guide for future experimental campaigns using the fully turbulent flow channel facility of the University of Strathclyde.
Original languageEnglish
Article number1863
Number of pages24
JournalJournal of Marine Science and Engineering
Volume10
Issue number12
DOIs
Publication statusPublished - 2 Dec 2022

Keywords

  • Fully Turbulent Flow Channel
  • FTFC
  • roughness effect
  • fouling control coatings
  • FCCs
  • KRISO containership
  • KCS
  • Granville's similarity law
  • ship resistance and powering

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